This is a Hobbypartz.com case harness. Already have a case but want to carry it on your back? This is exactly what you need! This harness allows you to strap a case or box into the harness and convert it to backpack carry. No more carrying cases by hand! Carry it on your back to free your hands for other tasks. The harness uses a 2 point cross strap to secure a case to the straps. Comfortable shoulder straps lead to a sternum and waist strap to secure your case to your back. The waist strap also features compartments with elastic closures for easy access to handy items while on the go.